Wet and Dry Processing of Cotton

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  • Created by: hdobbie
  • Created on: 02-01-16 23:42
(pre-weaving) Sizing
Application of starch or polymers to stabilise warp yarns to reduce breakages.
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Singeing
Mechanical. Improves wettability by burning off surface fibres.
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Desizing
Removal of size material using α-amylase or oxidative chemicals.
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Scouring
Removal of natural and added impurities by various processes depending on cotton type.
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Bleaching
Oxidation or reduction of the yellow chromaphores in cotton. Typical bleaching agents: hydrogen peroxide, sodium chlorite, sodium hyphochlorite.
5 of 6
Mercerisation
Changing the shape of the cotton fibre (swelling) by impregnating with ~22% sodium hydroxide solution.
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Other cards in this set

Card 2

Front

Mechanical. Improves wettability by burning off surface fibres.

Back

Singeing

Card 3

Front

Removal of size material using α-amylase or oxidative chemicals.

Back

Preview of the back of card 3

Card 4

Front

Removal of natural and added impurities by various processes depending on cotton type.

Back

Preview of the back of card 4

Card 5

Front

Oxidation or reduction of the yellow chromaphores in cotton. Typical bleaching agents: hydrogen peroxide, sodium chlorite, sodium hyphochlorite.

Back

Preview of the back of card 5
View more cards

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